Electronic apparatus and control method thereof

ABSTRACT

An electronic apparatus includes a memory configured to store a plurality of images; and a processor configured to identify qualities of the plurality of images, process the plurality of images using at least one artificial intelligence model corresponding to the identified qualities, and obtain a graphic image including the processed plurality of images, and the at least one artificial intelligence model is trained to increase a quality of an input image.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation application of U.S. patentapplication Ser. No. 16/842,319, filed on Apr. 7, 2020, which claimspriority under 35 U.S.C. § 119 to Korean patent application number10-2019-0157583, filed on Nov. 29, 2019, in the Korean IntellectualProperty Office, the disclosures of which are incorporated herein intheir entirety by reference.

BACKGROUND 1. Field

The disclosure is directed to an electronic apparatus and a controlmethod thereof, and more specifically to an electronic apparatus thatprocesses at least one image through an artificial intelligence modeland a control method thereof.

2. Description of Related Art

A display apparatus may generate a graphic image including variousimages, and may display by improving image quality of the graphic image.The various images included in the graphic image may be different inquality from each other, and based on performing an image enhancementprocessing process, disadvantages such as some image noise being moremagnified or sharpness reducing may be generated.

For example, a display apparatus, in order to generate a graphic imageincluding a plurality of thumbnail images of FIG. 1A, may receive animage from each of a plurality of content providers and store thereceived image in a memory as illustrated in FIG. 1B. Further, agraphics processing unit (GPU) provided in the display apparatus maygenerate a graphic image including a plurality of images and store inthe memory again, the graphic image may then be scaled or compressed tocorrespond to a resolution of the display apparatus, and may bedisplayed after performing image quality correction. The image qualitycorrecting process may include a process of removing noise, a process ofimproving sharpness to compensate for a blurring phenomenon that mayoccur after the scaling operation, and the like.

The plurality of images received from the plurality of content providersmay be different in quality such as an image of high quality and animage of a low quality. Based on applying an image enhancement algorithmto the graphic image including the plurality of images, there may be theproblem of enhancing to an optimum image quality not being possiblebased on the quality of the plurality of images being different. Forexample, the image enhancement algorithm that removes noise may beadvantageous in image enhancement of low quality images but may bedisadvantageous is removing high-frequency area of high quality images.In addition, the image enhancement algorithm that raises sharpness mayraise sharpness of a high quality image, but may be problematic infurther magnifying noise of low quality image.

Accordingly, there is a need to develop a method of enhancing imagequality of the graphic image while the plurality of images included inthe graphic image maintain a uniform quality.

SUMMARY

Example embodiments address at least the above problems and/ordisadvantages and other disadvantages not described above. Also, theexample embodiments are not required to overcome the disadvantagesdescribed above, and may not overcome any of the problems describedabove.

Provided are an electronic apparatus for improving image quality of agraphic image including a plurality of images to a uniform quality and acontrol method thereof.

According to an aspect of an example embodiment, there is provided anelectronic apparatus including: a memory configured to store a pluralityof images; and a processor configured to: identify qualities of theplurality of images, process the plurality of images using at least oneartificial intelligence model corresponding to the identified qualities,and obtain a graphic image comprising the processed plurality of images,wherein the at least one artificial intelligence model is trained toincrease a quality of an input image.

The at least one artificial intelligence model may include a firstartificial intelligence model trained to reduce noise and a secondartificial intelligence model trained to increase sharpness, and theplurality of images may include a first image and a second image,wherein the processor may be configured to: based on identifying thatthe noise included in the first image is greater than or equal to athreshold noise, use the first artificial intelligence model to processthe first image, and based on identifying that the sharpness of thesecond image is less than a threshold sharpness, use the secondartificial intelligence model to process the second image.

The at least one artificial intelligence model may include a thirdartificial intelligence model and a fourth artificial intelligence modelwhich are trained to reduce noise of different strengths, and whereinthe processor may be further configured to process a third image of theplurality of images, using the third artificial intelligence model orthe fourth artificial intelligence model based on a strength of noiseincluded in the third image.

The electronic apparatus may further include: a communication interface,wherein the processor may be further configured to: obtain the pluralityof images by decoding input data input through the communicationinterface, store the plurality of images in the memory, and identify thequalities of the plurality of images based on meta data included in theinput data.

The electronic apparatus may further include: a display, wherein theprocessor may be further configured to: process the graphic image tocorrespond to a resolution of the display, through at least one of ascaling process or an image enhancement process, and control the displayto display the processed graphic image.

The processor may include: a first processing unit configured toidentify the qualities of the plurality of images; a second processingunit configured to process the plurality of images using the at leastone artificial intelligence model corresponding to the identifiedqualities; a third processing unit configured to obtain the graphicimage comprising the processed plurality of images; and a fourthprocessing unit configured to process the graphic image.

The first processing unit may be a central processing unit (CPU), andthe third processing unit is a graphic processing unit (GPU).

The second processing unit may be a neural processing unit (NPU).

The memory may be further configured to store a video content, and theprocessor may be further configured to obtain a video image byprocessing the video content, and obtain an output image by mixing thevideo image and the graphic image.

The plurality of images may be images provided by a plurality of contentproviders.

According to an aspect of an example embodiment, there is provided acontrol method of an electronic apparatus, the control method including:identifying qualities of a plurality of images; processing the pluralityof images using at least one artificial intelligence model correspondingto the identified qualities, and obtaining a graphic image comprisingthe processed plurality of images, wherein the at least one artificialintelligence model is trained to increase a quality of an input image.

The at least one artificial intelligence model may include a firstartificial intelligence model trained to reduce noise and a secondartificial intelligence model trained to increase sharpness, and theplurality of images may include a first image and a second image,wherein the processing may include: processing the first image using thefirst artificial intelligence model based on identifying that the noiseincluded in the first image is greater than or equal to a thresholdnoise or more, and processing the second image using the secondartificial intelligence model based on identifying that the sharpness ofthe second image is less than a threshold sharpness.

The at least one artificial intelligence model may include a thirdartificial intelligence model and a fourth artificial intelligence modelwhich are trained to reduce noise of different strengths. The processingmay include processing a third image of the plurality of images usingthe third artificial intelligence model or the fourth artificialintelligence model based on a strength of noise included in the thirdimage.

The control method may include: receiving input data; and obtaining theplurality of images by decoding the input data, wherein the identifyingcomprises identifying the qualities of the plurality of images based onmeta data included in the input data.

The control method may include: processing the graphic image tocorrespond to a resolution of a display provided in the electronicapparatus, through at least one of a scaling process or an imageenhancement process; and displaying the processed graphic image.

The identifying may include identifying the qualities of the pluralityof images by a first processor, wherein the processing the plurality ofimages using the at least one artificial intelligence model may includeprocessing the plurality of images using the at least one artificialintelligence model corresponding to the identified qualities by a secondprocessor, wherein the obtaining the graphic image may include obtainingthe graphic image by a third processor, and wherein the control methodmay further include processing the graphic image, by a fourth processor,to correspond to a resolution of a display provided in the electronicapparatus.

The processing the plurality of images using the at least one artificialintelligence model may further include a first processing performed bythe fourth processor and a second processing that is performed on theplurality of images based on the at least one artificial intelligencemodel corresponding to the identified qualities.

The second processor may be a neural processing unit (NPU).

The control method may further include: obtaining a video image byprocessing a video content; and obtaining an output image by mixing thevideo image and the graphic image.

The plurality of images may be images provided by a plurality of contentproviders.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features and advantages of certainembodiments of the present disclosure will be more apparent from thefollowing detailed description, taken in conjunction with theaccompanying drawings, in which:

FIG. 1A is a diagram for describing a problem of conventionaltechnology;

FIG. 1B is a diagram for describing a problem of conventionaltechnology;

FIG. 2 is a block diagram illustrating a configuration of an electronicapparatus according to an embodiment of the disclosure;

FIG. 3 is a diagram for describing an operation of a processor accordingto an embodiment of the disclosure;

FIG. 4 is a diagram for describing a processing method of a plurality ofimages according to an embodiment of the disclosure;

FIG. 5 is a diagram for describing a processing method of a plurality ofimages according to an embodiment of the disclosure;

FIG. 6 is a diagram for describing a mixing of a video image and agraphic image according to an embodiment of the disclosure; and

FIG. 7 is a flow chart for describing a control method of an electronicapparatus according to an embodiment of the disclosure.

DETAILED DESCRIPTION

Example embodiments are described in greater detail below with referenceto the accompanying drawings.

In the following description, like drawing reference numerals are usedfor like elements, even in different drawings. The matters defined inthe description, such as detailed construction and elements, areprovided to assist in a comprehensive understanding of the exampleembodiments. However, it is apparent that the example embodiments can bepracticed without those specifically defined matters. Also, well-knownfunctions or constructions are not described in detail since they wouldobscure the description with unnecessary detail.

The terms used in the embodiments of the disclosure are general termsselected that are currently widely used considering their functionherein. However, the terms may change depending on intention, legal ortechnical interpretation, emergence of new technologies, and the like ofthose skilled in the related art. Further, in certain cases, there maybe terms arbitrarily selected by the applicant, and this case, themeaning of the term will be disclosed in greater detail in thecorresponding description. Accordingly, the terms used herein are not tobe construed simply as its designation but based on the meaning of theterm and the overall context of the disclosure.

Expressions such as “comprise”, “may comprise”, “consist”, or “mayconsist of” used herein are to be understood as designating a presenceof a characteristic (e.g., elements such as a number, a function, anoperation, and a component), and do not exclude the presence of anadditional characteristic.

The expression at least one of A and/or B should be understood torepresent “A” or “B” or any one of “A and B”.

Expressions such as “first”, “second”, and so on used herein may be usedto modify various elements regardless of order and/or importance.Further, it should be noted that the expressions are merely used todistinguish an element from another element and not to limit therelevant elements.

A singular expression includes a plural expression, unless otherwisespecified. It is to be understood that the terms such as “comprise” or“consist of” are used herein to designate a presence of acharacteristic, number, step, operation, element, component, or acombination thereof, and not to preclude a presence or a possibility ofadding one or more of other characteristics, numbers, steps, operations,elements, components or a combination thereof.

In this disclosure, the term “user” may refer to a person using anelectronic apparatus or an apparatus (e.g., an artificial intelligenceelectronic apparatus) using an electronic device.

An embodiment of the disclosure will be described in greater detailbelow with reference to the attached drawings.

FIG. 2 is a block diagram illustrating a configuration of an electronicapparatus according to an embodiment of the disclosure.

The electronic apparatus 100, as a graphic image obtaining apparatus,may include a display such as a TV, desktop PC, notebook, video wall,large format display (LFD), digital signage, digital information display(DID), projector display, digital video disk (DVD) player, smartphone,tablet PC, monitor, smart glasses, smart watch, and the like, and may bean apparatus that directly displays the obtained graphic image. Inaddition, the electronic apparatus 100, as an apparatus not providedwith a display such as a set-top box (STB), a speaker, and a computerbody, may be an apparatus that provides the obtained graphic image tothe display apparatus. However, the electronic apparatus 100 is notlimited thereto, and may be any apparatus that is capable of obtaining agraphic image.

Referring to FIG. 2, the electronic apparatus 100 may include a memory110 and a processor 120, but is not limited thereto. The electronicapparatus 100 may be implemented in a form with some configurationsexcluded.

The memory 110 may store a plurality of images. The plurality of imagesmay be different in quality from each other. For example, the pluralityof images may be images provided by each of a plurality of contentproviders, and the quality thereof may be different from each other.

The memory 110 may store information on various artificial intelligencemodels. The artificial intelligence model may be an artificialintelligence model trained to improve quality of an input image.

For example, the memory 110 may store information on a first artificialintelligence model trained to reduce noise and information on a secondartificial intelligence model trained to improve sharpness. At least oneof the first artificial intelligence model or the second artificialintelligence model may be in plurality. For example, the memory 110 maystore a plurality of first artificial intelligence models thatcorrespond to different noise strength levels. Based on the noisestrength being less than a threshold strength, the first artificialintelligence model 1 may be used, and based on the noise strength beingthe threshold strength or more, the first artificial intelligence model2 may be used. In addition, the memory 110 may store the plurality offirst artificial intelligence models corresponding to a plurality ofdifferent noise types. When an image includes a mosquito type noise, afirst artificial intelligence model 3 may be used for the image, andwhen the image includes a contour type noise, a first artificialintelligence model 4 may be used for the image.

The memory 110 may store an image with each of the plurality of imagesapplied to an artificial intelligence model. For example, the memory 110may store an image 1 and an image 2. Further, the memory 110 may storeimage 1′ with image 1 applied to the first artificial intelligence modeland image 2′ with image 2 applied to the second artificial intelligencemodel.

The memory 110 may further store video content.

The memory 110 may be implemented as a non-volatile memory and avolatile memory, but is not limited thereto. For example, a hard diskmay be used in place of the memory 110, and any configuration may beused if the configuration is capable of storing data.

The processor 120 may control the overall operation of the electronicapparatus 100. Specifically, the processor 120 may be connected to eachconfiguration of the electronic apparatus and control the overalloperation of the electronic apparatus 100. For example, the processor120 may be connected to configurations such as the memory 110, thedisplay, a communication interface and the like, and control theoperation of the electronic apparatus 100.

According to an embodiment, the processor 120 may be implemented as adigital signal processor (DSP), a microprocessor, and a time controller(TCON), but is not limited thereto. The processor 120 may include one ormore of a central processing unit (CPU), a micro controller unit (MCU),a micro processing unit (MPU), a controller, an application processor(AP), a communication processor (CP), or an ARM processor, or may bedefined by the corresponding term. In addition, the processor 120 may beimplemented as a System on

Chip (SOC) or a large scale integration (LSI) embedded with a processingalgorithm, and as a form of field programmable gate array (FPGA).

The processor 120 may identify the quality of each of the plurality ofimages stored in the memory 110. For example, the processor 120 mayidentify the noise of the first image as an image of a threshold noiseor more, and may identify the sharpness of the second image as an imageof a threshold sharpness or less.

However, the processor is not limited thereto, and the processor 120 mayidentify the quality of the image through various methods. For example,the processor 120 may identify a first image that has a noise in a rangebetween a first threshold noise and a second threshold noise, and mayidentify a second image that has a noise greater than the secondthreshold noise. Further, the processor 120 may identify the noise typeof the first image as a mosquito type image and the noise type of thesecond image as a contour type image.

The electronic apparatus 100 may further include the communicationinterface, and the processor 120 may obtain a plurality of images bydecoding input data input through the communication interface, store theplurality of images in the memory 110, and identify the quality of eachof the plurality of images based on meta data included in the inputdata.

For example, the processor 120 may obtain meta data from headerinformation of input data received in an encoded state. The meta datamay include information on image compressive strength corresponding toinput data.

However, the processor 120 is not limited thereto, and may identify thequality of the image through various methods. For example, the processor120 may identify the quality of the image using an artificialintelligence model trained to identify image quality, and there are nolimitations to the methods in identifying image quality. In addition,the processor 120 may further divide the image quality and identifythereof. For example, the processor 120 may identify the image as havingan image sharpness of less than the threshold sharpness and including acontour type noise.

The processor 120 may use the artificial intelligence modelcorresponding to the identified quality of each of the plurality ofimages and process the same.

For example, the artificial intelligence model may include the firstartificial intelligence model trained to reduce noise and the secondartificial intelligence model trained to improve sharpness. Further, theprocessor 120 may, based on the noise included in the first image from aplurality of images being identified as a threshold value or more,process the first image using the first artificial intelligence model,and based on the sharpness of the second image from the plurality ofimages being identified as less than the threshold sharpness, processthe second image using the second artificial intelligence model.

In addition, the artificial intelligence model may include a thirdintelligence model and a fourth intelligence model trained to reducenoise of different intensities. Further, the processor 120 may, based onthe noise strength included in the third image from the plurality ofimages, use the third artificial intelligence model or the fourthartificial intelligence model to process the third image.

In addition, the artificial intelligence model may include a fifthartificial intelligence model trained to remove a mosquito type noiseand a sixth artificial intelligence model trained to remove a contourtype noise. Further, the processor 120 may, based on a fifth image fromthe plurality of images including a mosquito type noise, process thefifth image using a fifth artificial intelligence model, and based on asixth image from the plurality of images including a contour type noise,process the sixth image using the sixth artificial intelligence model.

In addition, the artificial intelligence model may be divided to aplurality of artificial intelligence models according to imagesharpness, and the processor 120 may process the image with theartificial intelligence model that corresponds to the image sharpness.

The quality of image as described above may be divided into variouscategories, and there are no specific limitations. Further, theprocessor may apply the plurality of artificial intelligence modelsaccording to image quality. For example, the processor 120 may, based onimage sharpness being less than the threshold sharpness and including acontour type noise, process an image using the second artificialintelligence model and the six artificial intelligence modelsequentially.

In addition, the processor 120 may process an image using a furtherdivided artificial intelligence model. For example, the artificialintelligence model may include an artificial intelligence model thatremoves the contour type noise and improves sharpness, an artificialintelligence model that removes the contour type noise and maintainssharpness, an artificial intelligence model that removes the mosquitotype noise and improves sharpness, and an artificial intelligence modelthat removes the mosquito type noise and maintains sharpness. Further,the processor 120 may use the artificial intelligence corresponding tothe image quality to process the image.

The processor 120 may obtain a graphic image including processedplurality of images. For example, the processor 120 may obtain a graphicimage with a plurality of images arranged in matrix form.

The electronic apparatus 100 may further include a display, and theprocessor 120 may process the graphic image to correspond to aresolution of the display, and control the display to display theprocessed graphic image. The processing may include at least one of ascaling process or an image enhancement process.

However, the processor is not limited thereto, and the processor 120 mayprocess the graphic image to correspond to the resolution of theexternal display apparatus and transmit the processed graphic image tothe external display apparatus.

The memory 110 may further store a video content, and the processor 120may process the video content to obtain a video image, and mix the videoimage and the graphic image to obtain an output image.

The processor 120 may include a first processing unit that identifiesthe quality of each of the plurality of images, a second processing unitthat uses an artificial intelligence model corresponding to theidentified quality of each of the plurality of images and processes thesame, a third processing unit that obtains a graphic image including theprocessed plurality of images, and a fourth processing unit thatprocesses the graphic images.

For example, the first processing unit may operate based on an operatingsystem such as a central processing unit (CPU), the second processingunit may be a neural processing unit (NPU), and the third processingunit and the fourth processing unit may perform a predeterminedoperation. For example, the third processing unit may be a processingunit dedicated to signal processing such as a digital signal processor(DSP) and a graphics processing unit (GPU), and the fourth processingunit may be circuitry performing at least one of scaling or imageenhancement.

The neural processing unit (NPU), as a processor dedicated to neuralnetwork processing, may include a plurality of processing elements. Aone-directional shift or a bidirectional shift may be possible betweenadjacent processing elements.

Each of the processing elements may generally include a multiplier andan arithmetic logic unit (ALU), and the ALU may include at least oneadder. The processing element may perform four fundamental arithmeticoperations using the multiplier and the ALU. However, the processingelement is not limited thereto, and may be formed in other structurescapable of performing the four fundamental arithmetic operations,shifts, and the like. Further, each of the processing elements mayinclude a register for storing data.

The second processing unit may process the each of the plurality ofimages based on the artificial intelligence model corresponding to theprocess performed by the fourth processing unit and the identifiedquality. For example, based on a sharpness improvement performance forcompensating a blur phenomenon being superior after the fourthprocessing unit performs a scaling operation, the second processing unitmay use the artificial intelligence model to provide images in highquality. This is due to the possibility of noise increasing based on alow quality image being processed by the fourth processing unit. Inaddition, based on noise removing performance of the fourth processingunit being superior, the second processing unit may use the artificialintelligence model to provide image in low quality. This is due to thepossibility of sharpness reducing as high frequency components areremoved based on high quality images being processed by the fourthprocessing unit.

The processor 120, in the description above, may be described asincluding a first processing unit to a fourth processing unit, but isnot limited thereto. For example, the first processing unit to thefourth processing unit may all be implemented to individual chip types.In addition, the processor 120 may include a first processing unit to athird processing unit, and the display may be implemented to a formincluding circuitry like the fourth processing unit.

The function related to artificial intelligence according to thedisclosure may be operated through the processor 120 and the memory 110.

The processor 120 may consist of one or a plurality of processors. Theone or plurality of processors may be a general-purpose processor suchas a CPU, an AP, and a DSP, a graphic dedicated processor such as a GPUand a vision processing unit (VPN), or an artificial intelligencededicated processor such as an NPU.

The one or plurality of processors may, based on pre-defined operationrules stored in the memory 110 and the artificial intelligence model,control to process the input data. In addition, based on the one orplurality of processors being an artificial intelligence dedicatedprocessor, the artificial intelligence dedicated processor may bedesigned to a hardware structure specializing in processing a specificartificial intelligence model. The pre-defined operation rules or theartificial intelligence model may be characterized by being made throughlearning.

Being made through learning may refer to a pre-defined operation rule orartificial intelligence model being made to perform a desiredcharacteristic (or, object) as the basic artificial intelligence modelis trained using a plurality of learning data by a learning algorithm.The learning may be carried out in the machine itself performing theartificial intelligence according to the disclosure, or through aseparate server and/or system. Examples of learning algorithm includesupervised learning, unsupervised learning, semi-supervised learning orreinforcement learning, but are not limited thereto.

The artificial intelligence model may consist of a plurality of neuralnetwork layers. Each of the plurality of neural network layers may havea plurality of weight values, and perform neural network processingthrough calculating the calculation result of the previous layer and thecalculation between the plurality of weight values. The plurality ofweight values held by the plurality of neural network layers may beoptimized by the training result of the artificial intelligence model.For example, the plurality of weight values may be renewed for the lossvalue or the cost value obtained from the artificial intelligence modelduring the training process be reduced or optimized.

The artificial intelligence network may include a deep neural network(DNN), and a convolutional neural network (CNN), a deep neural network(DNN), a recurrent neural network (RNN), a Restricted Boltzmann Machine(RBM), a deep belief network (DBN), a bidirectional recurrent deepneural network (BRDNN), a generative adversarial network (GAN), a DeepQ-Networks, or the like, for example, may be included therein, but arenot limited thereto.

The electronic apparatus 100 may further include a display and acommunication interface.

The display may be implemented as various types of display such as aliquid crystal display (LCD), an organic light emitting diode (OLED)display, a plasma display panel (PDP), a micro LED, a laser display, VR,glass or the like. In the display, a driving circuit and a backlightunit, which may be implemented in the form of an a-si TFT, a lowtemperature poly silicon (LTPS) TFT, an organic TFT (OTFT), and the likemay also be included. The display may be implemented as a touch screencoupled with a touch sensor, a flexible display, a three dimensionaldisplay (3D display), or the like.

The communication interface may be configured to perform communicationwith various types of external apparatuses according to the varioustypes of communication methods. The communication interface may includea Wi-Fi module, a Bluetooth module, an infrared communication module,and a wireless communication module. The each of the communicationmodule may be implemented in at least one hardware chip type.

The processor 120 may use the communication interface to performcommunication with the various external apparatuses. The externalapparatus may include a server, a Bluetooth earphone, a displayapparatus, and the like.

The Wi-Fi module and the Bluetooth module may perform communicationusing Wi-Fi method and Bluetooth method, respectively. Based on usingthe Wi-Fi module or the Bluetooth module, various connection informationsuch as a service set identifier (SSID) and a session key may betransmitted and received first, and various information may betransmitted and received after communication connection.

The infrared ray communication module may perform communicationaccording to infrared data association (IrDA) technology that transmitsdata wireless at a close range using infrared ray between visible raysand millimeter waves.

The wireless communication module may include at least one communicationchip performing communication according to various communicationstandards such as ZigBee, 3rd generation (3G), 3^(rd) generationpartnership project (3GPP), long term evolution (LTE), LTE advanced(LTE-A), 4^(th) generation (4G), 5^(th) generation (5G), or the like, inaddition to the communication methods described above.

Other communication interfaces may include at least one of a wiredcommunication module performing communication using a local area network(LAN) module, Ethernet module, a pair cable, a coaxial cable, an opticalcable, or the like.

The communication interface may further include an input and outputinterface. The input and output interface may be any one interface ofthe high-definition multimedia interface (HDMI), mobile high-definitionlink (MHL), universal serial bus (USB), display port (DP), Thunderbolt,video graphics array (VGA) port, RGB port, D-subminiature (D-SUB),digital visual interface (DVI), and the like.

The input and output interface may input or output any one of an audioand a video signals.

According to an embodiment, the input and output interface may include aport for inputting and outputting only an audio signal and a separateport for inputting and outputting only a video signal, or may beimplemented to one port for inputting and outputting both the audiosignal and the video signal.

According to the various embodiments of the disclosure, the electronicapparatus may identify the quality of each of the plurality of images,process each of the plurality of images using the artificialintelligence model corresponding to the identified quality, and based onobtaining the graphic image including the processed plurality of images,maintain a uniform quality of the plurality of images even when imageenhancement is carried out on the graphic image.

The operation of the processor 120 will be described in greater detailbelow through the various drawings. Each of the embodiments in thedrawings may be implemented individually, and in a combined form.

FIG. 3 is a diagram for describing an operation of a processor accordingto an embodiment of the disclosure.

As illustrated in FIG. 3, the processor 120 may be implemented in a formwith the CPU 310, the NPU 320, the GPU 330, and the graphic path 340respectively divided. Further, the processor 120 may be implemented as achip including the CPU 310, the NPU 320, the GPU 330, and the graphicpath 340. In an example embodiment, the CPU 310, the NPU 320, the GPU330, and the graphic path 340 may be implemented as more than oneprocessors.

The memory 110 may include a buffer 350 and an enhanced graphic userinterface 360.

The CPU 310 may decode the input data to obtain the plurality of images,and store the obtained plurality of images in the buffer 350. The CPU310 may obtain meta data from the input data. The meta data may includeinformation on compressive strength of an image corresponding to theinput data. The CPU 310 may store information on the compressivestrength of the image included in the meta data in the buffer 350.

The buffer 350 may store a plurality of images, information on thecompressive strength of each image, and the plurality of artificialintelligence models.

The NPU 320 may process each of the plurality of images stored in thebuffer 350 using the artificial intelligence model selected according toinformation on the corresponding compressive strength. The NPU 320 mayprocess each of the plurality of images using the artificialintelligence model, and may then store the processed plurality of imagesback in the buffer 350.

The quality of the plurality of images prior to being processed by theNPU 320 may be different from each other, but the quality of theplurality of images processed by the NPU 320 may be similar.

In addition, the NPU 320 may determine the artificial intelligence modelfor processing each of the plurality of images based on the performanceof the graphic path 340. For example, based on the sharpness improvementperformance of the graphic path 340 being superior, the NPU 320 may usethe artificial intelligence model for providing the plurality of imagesin high quality. In addition, based on the noise removing performance ofthe graphic path 340 being superior, the NPU 320 may use the artificialintelligence model for providing the plurality of images in low quality.

The GPU 330 may generate a graphic image including a plurality of imagesprocessed by the artificial intelligence model, as the enhanced GUI 360,and store the enhanced GUI 360 in the memory 110.

The graphic path 340 may scale the graphic image to correspond to thedisplay resolution, and perform image enhancement. The image enhancementmay include noise removal, sharpness improvement, and the like.

Based on processing the plurality of images to be included in thegraphic image prior to generating the graphic image as described aboveto a uniform quality, the quality of the plurality of images may bemaintained uniformly even when image enhancement of the graphic image iscarried out.

FIGS. 4 and 5 are diagrams for describing a processing method of aplurality of images according to an embodiment of the disclosure.

The processor 120 may receive an image in operation S410, and mayidentify whether the noise of the image exceeds a threshold noise inoperation S420. The noise of the image may attribute to a deteriorationaccording to compression. For example, the image may be stored ortransmitted according to a JPEG standard still image compression method,and accordingly the presence and absence of noise may be identified froman amount of the JPEG compression.

The removing of compression noise will be first described with referenceto FIG. 5. As illustrated in FIG. 5, the electronic apparatus 100 mayinclude a still image compression decoder 510, a compressive strengthdiscriminator 520, a neural network model storing memory 530, a neuralnetwork model loader 540, a compression noise removing neural network550, and a distributor 560. Each of the still image compression decoder510, the compressive strength discriminator 520, the neural networkmodel loader 540, the compression noise removing neural network 550, andthe distributor 560 may be implemented in hardware as one configurationof the processor 120, and implemented in software module to operateaccording to the software module.

The still image compression decoder 510 may output a plurality of imagesby decoding the input data. Further, the still image compression decoder510 may obtain meta data included in the input data in the decodingprocess. The meta data may include information on image compressivestrength corresponding to input data. For example, the meta data mayinclude a quantization parameter.

The still image compression decoder 510 may provide a plurality ofimages to the distributor 560, and the description thereof will bedescribed below together with the distributor 560.

The compressive strength discriminator 520 may identify compressivestrength based on a quantization parameter. For example, thequantization parameter may be divided into a predetermined plurality ofsections, the compressive strength per each section may be mapped intonumbers and stored, and the compressive strength discriminator 520 mayidentify the compressive strength of the corresponding number based onthe quantization parameter being input.

The neural network model loader 540 may read the artificial intelligencemodel corresponding to compressive strength from the plurality ofartificial intelligence models stored in the neural network modelstoring memory 530. That is, the artificial intelligence model usedaccording to compressive strength may be varied.

The compression noise removing neural network 550 may process imagesusing the read artificial intelligence model.

The distributor 560 may output one of a decoded image output from thestill image compression decoder 510 and the processed image output fromthe compression noise removing neural network 550 based on thecompressive strength. For example, the distributor 560 may, based on thecompressive strength being a threshold strength or more, output aprocessed image output from the compression noise removing neuralnetwork 550, and based on the compressive strength being less than thethreshold strength, output the decoded image output from the still imagecompression decoder 510.

The plurality of artificial intelligence models described above may beobtained by learning compression according to each of the compressivestrength and restored images.

Referring back to FIG. 4, the processor 120 may, based on the noiseexceeding the threshold noise, remove the noise in operation S430.Further, the processor 120 may, based on the noise not exceeding thethreshold noise, omit the noise removing operation.

The processor 120 may identify if the image sharpness is less than thethreshold sharpness in operation S440. For example, the processor 120may process images by Fast Fourier Transform (FFT) to identify whetherthe image sharpness is less than the threshold sharpness based on thefrequency component included in the image. For example, based on theimage being an upscaled image, a high frequency component from afrequency distribution aspect may be small, and based on the image beingan original image, the high frequency component may be high. That is,the processor 120 may identify whether image sharpness is less than thethreshold sharpness based on the distribution of the high frequencycomponent.

The processor 120 may compensate for loss of sharpness based onidentifying that the image sharpness is less than the thresholdsharpness, in operation S450.

The processor 120 may generate an image in which the sharpness isincreased and the noise is removed, in operation S460.

In the above, the processor 120 has been described as removing noise andimproving sharpness, but the order thereof is not limited thereto. Inaddition, any one of the noise removal or the sharpness improvement maybe performed. Further, at least one of determining the presence andabsence of noise and the determining the degree of sharpness may beperformed using the artificial intelligence model. For example, theprocessor 120 may identify whether the image includes noise using thetrained artificial intelligence model to identify the presence andabsence of noise.

FIG. 6 is a diagram for describing a mixing of a video image and agraphic image according to an embodiment of the disclosure. Theconfiguration of obtaining the graphic image from the configurationsdisclosed in FIG. 6 is the same as that of FIG. 3, and repetitivedescriptions will be omitted.

As illustrated in FIG. 6, the electronic apparatus 100 may furtherinclude a video processor 610 and a mixer 620. Each of the videoprocessor 610 and the mixer 620 may be implemented in hardware as oneconfiguration in the processor 120, and implemented in software moduleto operate according to the software module.

The video processor 610, as a type of digital signal processor (DSP),may obtain a video image by processing video content stored in thememory 110.

The mixer 620 may mix the video image output from the video processor610 and the graphic image output from the graphic path 340 to obtain theoutput image. The output image may be displayed through the display.

FIG. 7 is a flow chart for describing a control method of an electronicapparatus according to an embodiment of the disclosure.

First, the quality of each of the plurality of images may be identifiedin operation S710. Next, each of the plurality of images may beprocessed using the artificial intelligence model corresponding to theidentified quality in operation S720. Next, a graphic image includingthe processed plurality of images may be obtained in operation S730. Theartificial intelligence model may be trained to improve the quality ofthe input image.

The artificial intelligence model may include a first artificialintelligence model trained to reduce noise and a second artificialintelligence model trained to improve sharpness, and operation S720 mayinclude processing a first image using the first artificial intelligencemodel based on the noise included in the first image from the pluralityof images being identified as a threshold noise or more, and processinga second image using the second artificial intelligence model based onthe sharpness of the second image from the plurality of images beingidentified as less than the threshold sharpness.

In addition, the artificial intelligence model may include a thirdartificial intelligence model and a fourth artificial intelligence modeltrained to reduce noise of different strengths, and operation S720 mayinclude processing an image using the third artificial intelligencemodel or the fourth artificial intelligence model based on the noisestrength included in the third image from the plurality of images.

Further, the processing may further include receiving the input data andobtaining a plurality of images by decoding input data, and operationS710 may include identifying the quality of each of the plurality ofimages based on meta data included in the input data.

The identifying may further include processing to correspond to theresolution of the display provided in the electronic apparatus anddisplaying the processed graphic image, and the processing may includeat least one of a scaling process or an image enhancement process.

Operation S710 may include identifying the quality of each of theplurality of images by the first processing unit, operation S720 mayinclude using the artificial intelligence model that corresponds to theidentified quality of each of the plurality of images by the secondprocessing unit, operation S730 may include obtaining a graphic imageincluding the processed plurality of images by the third processingunit, and the processing to correspond to the resolution of the displaymay include processing the graphic image by the fourth processing unit.

Further, operation S720 using the artificial intelligence model mayinclude processing performed by the fourth processing unit andprocessing each of the plurality of images based on the artificialintelligence model corresponding to the identified quality.

The first processing unit may operate based on the operating system, thesecond processing unit may be the neural processing unit (NPU), and thethird processing unit and the fourth processing unit may perform apredetermined operation.

The obtaining a video image processing the video content, and theobtaining the output image mixing the video image and the graphic imagemay be further included.

The plurality of images may be images provided by a plurality of contentproviders.

According to the various embodiment of the disclosure as describedabove, the electronic apparatus may identify the quality of each of theplurality of images, process each of the plurality of images using theartificial intelligence model corresponding to the identified quality,and based on obtaining the graphic image including the processedplurality of images, maintain a uniform quality of the plurality ofimages even when image enhancement of the graphic image is carried out.

According to an embodiment, the various embodiments described above maybe implemented as a software including instructions stored onmachine-readable storage media readable by a machine (e.g., a computer).The machine, as an apparatus capable of calling an instruction stored ina storage medium and operating according to the called instruction, mayinclude an electronic apparatus (e.g., an electronic apparatus (A))according to the disclosed embodiments. Based on instructions beingexecuted by the processor, the processor may directly, or using otherelements under the control of the processor, perform a functioncorresponding to the instruction. The instruction may include a codegenerated by a compiler or a code executed by an interpreter. Themachine-readable storage medium may be provided in the form of anon-transitory storage medium. ‘Non-transitory’ used herein only denotesthat a storage medium does not include a signal and is tangible, butdoes not distinguish data being semi-permanently or temporarily storedin a storage medium.

Further, according to an embodiment, the method according to the variousembodiments described above may be provided in a computer programproduct. The computer program product may be exchanged between a sellerand a purchaser as a commodity. The computer program product may bedistributed in the form of a machine-readable storage medium (e.g., acompact disc read only memory (CD-ROM)) or distributed online through anapplication store (e.g., PlayStore™). In the case of on-linedistribution, at least a portion of the computer program product may beat least temporarily stored in a storage medium such as a manufacturer'sserver, a server of an application store, or a memory of a relay server,or temporarily generated.

In addition, according to an embodiment, the various embodimentsdescribed above may be implemented in a recordable medium which isreadable by computer or an apparatus similar to computer using software,hardware, or the combination of software and hardware. In some cases,the embodiments described herein may be implemented by the processoritself. Based on a software implementation, the embodiments such as theprocedures and functions described herein may be implemented withseparate software modules. Each of the software modules may perform oneor more of the functions and operations described herein.

The computer instructions for performing the processing operations ofapparatuses according to the various embodiments described above may bestored in a non-transitory computer-readable medium. The computerinstructions stored in this non-transitory computer-readable mediumcause the specific apparatus to perform the processing operations in theapparatus according to the above-described various embodiments whenexecuted by the processor of the specific apparatus. The non-transitorycomputer readable medium refers to a medium that stores datasemi-permanently rather than storing data for a very short time, such asa register, a cache, a memory or etc., and is readable by an apparatus.Specific examples of the non-transitory computer readable medium includea compact disc (CD), a digital versatile disc (DVD), a hard disc, aBlu-ray disc, a universal serial bus (USB), a memory card, a read onlymemory (ROM), and the like.

In addition, each of the elements (e.g., a module or a program)according to the various embodiments described above may be composed ofa single entity or a plurality of entities, and some sub-elements of theabovementioned sub-elements may be omitted, or another sub-element maybe further included in various embodiments. Alternatively oradditionally, some elements (e.g., modules or programs) may beintegrated into one entity to perform the same or similar functionsperformed by each respective element prior to integration. Theoperations performed by a module, a program, or other element, inaccordance with the various embodiments, may be performed sequentially,in a parallel, repetitively, or in a heuristically manner, or at leastsome operations may be performed in a different order, omitted, or mayfurther include a different operation.

The foregoing exemplary embodiments are merely exemplary and are not tobe construed as limiting. The present teaching can be readily applied toother types of apparatuses. Also, the description of the exemplaryembodiments is intended to be illustrative, and not to limit the scopeof the claims, and many alternatives, modifications, and variations willbe apparent to those skilled in the art.

1. An electronic apparatus comprising: a memory configured to store aplurality of images and at least one artificial intelligence modeltrained to increase a quality of an input image; a first processorconfigured to identify qualities of the plurality of images; a secondprocessor configured to process the plurality of images using at leastone artificial intelligence model corresponding to the identifiedqualities; a third processor configured to obtain a graphic imageincluding the processed plurality of images received from the secondprocessor; and a fourth processor configured to process the graphicimage so that the processed graphic image is displayed on a display ofthe electronic apparatus.
 2. The electronic apparatus of claim 1,wherein the at least one artificial intelligence model comprises a firstartificial intelligence model trained to reduce noise and a secondartificial intelligence model trained to increase sharpness, and theplurality of images comprises a first image and a second image, whereinthe second processor is further configured to: based on the noiseincluded in the first image being greater than or equal to a thresholdnoise, use the first artificial intelligence model to process the firstimage, and based on the sharpness of the second image being less than athreshold sharpness, use the second artificial intelligence model toprocess the second image.
 3. The electronic apparatus of claim 1,wherein the at least one artificial intelligence model comprises a thirdartificial intelligence model and a fourth artificial intelligence modelwhich are trained to reduce noise of different strengths, and whereinthe second processor is further configured to process a third image ofthe plurality of images, using the third artificial intelligence modelor the fourth artificial intelligence model based on a strength of noiseincluded in the third image.
 4. The electronic apparatus of claim 1,further comprising: a communication interface, wherein the firstprocessor is further configured to: obtain the plurality of images bydecoding input data input through the communication interface, store theplurality of images in the memory, and identify the qualities of theplurality of images based on meta data included in the input data. 5.The electronic apparatus of claim 1, further comprising: the display,wherein the fourth processor is further configured to: process thegraphic image to correspond to a resolution of the display, through atleast one of a scaling process or an image enhancement process.
 6. Theelectronic apparatus of claim 1, wherein the first processor is acentral processing unit (CPU), the second processor is a neuralprocessing unit (NPU), and the third processor is a graphic processingunit (GPU).
 7. The electronic apparatus of claim 1, wherein the memoryis further configured to store a video content, and the electronicapparatus further comprising: a video processor configured to obtain avideo image by processing the video content; and a mixer configured toobtain an output image by mixing the video image and the graphic image.8. The electronic apparatus of claim 1, wherein the plurality of imagesare images provided by a plurality of content providers.
 9. A controlmethod of an electronic apparatus, the control method comprising:identifying qualities of a plurality of images by a first processor;processing the plurality of images using at least one artificialintelligence model, which is trained to increase a quality of an inputimage, corresponding to the identified qualities by a second processor;obtaining a graphic image including the processed plurality of imagesreceived from the second processor, by a third processor; processing thegraphic image by a fourth processor; and displaying the processedgraphic image.
 10. The control method of claim 9, wherein the artificialintelligence model comprises a first artificial intelligence modeltrained to reduce noise and a second artificial intelligence modeltrained to increase sharpness, and the plurality of images comprises afirst image and a second image wherein the processing the plurality ofimages comprises: processing the first image using the first artificialintelligence model based on the noise included in the first image beinggreater than or equal to a threshold noise, and processing the secondimage using the second artificial intelligence model based on thesharpness of the second image being less than a threshold sharpness. 11.The control method of claim 9, wherein the at least one artificialintelligence model comprises a third artificial intelligence model and afourth artificial intelligence model which are trained to reduce noiseof different strengths, and wherein the processing the plurality ofimages comprises processing a third image of the plurality of imagesusing the third artificial intelligence model or the fourth artificialintelligence model based on a strength of noise included in the thirdimage.
 12. The control method of claim 9, further comprising: receivinginput data; and obtaining the plurality of images by decoding the inputdata by the first processor, wherein the identifying comprisesidentifying the qualities of the plurality of images based on meta dataincluded in the input data.
 13. The control method of claim 9, whereinthe processing the graphic image comprises processing the graphic imageto correspond to a resolution of a display provided in the electronicapparatus, through at least one of a scaling process or an imageenhancement process.
 14. The control method of claim 9, wherein theprocessing the plurality of images comprises a first processingperformed by the fourth processor and a second processing that isperformed on the plurality of images based on the at least oneartificial intelligence model corresponding to the identified qualities.15. The control method of claim 9, further comprising: obtaining a videoimage by processing a video content; and obtaining an output image bymixing the video image and the graphic image.
 16. The control method ofclaim 9, wherein the plurality of images are images provided by aplurality of content providers.